基于水化学和D、^(18)O同位素的豫西某矿山地下水水源识别  

Groundwater Source Identification Based on Hydrochemistry and D,^(18)O Isotopes in a Mine in Western Henan Province

作　　者：赵少攀 杨森 张东兴 常成 闫佳喆 刘念 麻倩倩 张茜 ZHAO Shaopan;YANG Sen;ZHANG Dongxing;CHANG Cheng;YAN Jiazhe;LIU Nian;MA Qianqian;ZHANG Xi(Henan First Geological Brigade Co.,Ltd,Zhengzhou 450000,Henan,China;Henan Natural Resources Science and Technology Innovation Center(Research on Geological Heritage and Geological Culture),Zhengzhou 450000,Henan,China;Henan Nonferrous Metals Comprehensive Exploration Engineering Technology Research Center,Zhengzhou 450000,Henan,China)

机构地区：[1]河南省第一地质大队有限公司,河南郑州450000 [2]河南省自然资源科技创新中心(地质遗迹与地质文化研究),河南郑州450000 [3]河南省有色金属综合勘查工程技术研究中心,河南郑州450000

出　　处：《西北地质》2025年第2期313-322,共10页Northwestern Geology

基　　金：河南省2022年度自然资源科研项目(2022-10);河南发恩德矿业有限公司科研项目(FED-HQ23155)联合资助。

摘　　要：笔者通过对研究区进行水文调查,发现坑道内地下水均为构造裂隙水,并分别在丰水期和枯水期对地表水和坑道水进行了针对性的采样分析。水化学特征显示,地表水中阴阳离子随丰水期和枯水期而发生变化显著,而地下水阴阳离子含量变化小,水化学性质较为稳定。通过对2021年420中段丰水期涌水量和同位素与水库水对比分析,推测在特殊水文年水库水参与该中段地下水活动。而其余地段地表水与地下水的水化学特征和D、^(18)O同位素含量均有较大区别,说明地表水参与地下水活动不显著。综上所述,研究区地下水具有较为独立的含水系统,主要接受岩层内构造裂隙水补给,平时基岩裂隙水和溪沟水补给水库水,当遇到大暴雨,水库水位上升至大于地下水位时,才会反补地下水,推测在水库水位大于535 m时,地表水参与个别中段地下水活动,但涌水总量不大,整体可控。Through the hydrology survey of the study area,the groundwater in the tunnel is found to be structural fissure water,the surface water and tunnel water are sampled and analyzed in the wet season and dry season respectively.The hydrochemical characteristics show that the anions and cations in surface water change significantly with the high and low water periods. However, the changes in the content of anions and cations in groundwater are small, and the chemical properties of the water are relatively stable. By comparing and analyz-ing the water inflow and isotopes of 420 section and reservoir in wet season of 2021, it is speculated that the reservoir water participates in groundwater activities in this section during special hydrological years. However, there are significant differences in the hydrochemical and D, ^(18)O isotope characteristics between surface water and groundwater in other areas, indicating that the participation of surface water in groundwater activities is not significant. In summary, the groundwater in the study area has a relatively independent aquifer system, mainly supplied by structural fissure water within the rock layers. At ordinary times, bedrock fissure water and brook water supply the reservoir water. When encountering a heavy rainstorm, the reservoir water level will rise above the groundwater level, and then the groundwater will be replenished. It is speculated that when the water level of the reservoir is greater than 535 m, surface water participates in individual groundwater activities in the individ-ual section, but the total amount of water inflow is not large and overall controllable 。

关 键 词：地表水 地下水 构造裂隙水 水化学 D、^(18)O同位素 

分 类 号：P641[天文地球—地质矿产勘探]